ASTROSAT CZTI

Data Quality Report

Orbit 28880

Creation date: 2024-06-27T19:57:32.635786
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_123T07_9000004140_28880cztM0_level2.evt modeM0/AS1A10_123T07_9000004140_28880cztM0_level2_quad_clean.evt
Size (bytes)601,234,56083,027,520
Size573.4 MB 79.2 MB
Events in quadrant A2,941,906540,193
Events in quadrant B2,951,932555,976
Events in quadrant C3,247,230526,639
Events in quadrant D8,650,783461,632

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125321
B0126211
C0134611
D0299161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6147500.813405%
B6147560.911014%
C61481332.163305%
D6148162326.398829%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7062 6147 0 0 0.00% 0.00%
B 7062 6147 0 0 0.00% 0.00%
C 7063 6148 17 17 0.24% 0.28%
D 7063 6148 1536 1536 21.75% 24.98%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 6 21314 136.01 755 739 151.3
A 13 254 11044 68.12 755 739 151.3
A 3 137 7254 43.07 755 739 151.3
B 15 32 20141 135.92 747 727 142.8
B 12 111 17447 117.06 747 727 142.8
B 11 111 15790 105.46 747 727 142.8
C 3 233 220847 1326.23 714 718 166.0
C 14 238 131085 785.43 714 718 166.0
C 15 208 48815 289.77 714 718 166.0
D 8 195 4373872 27188.87 677 657 160.8
D 7 80 1455023 9041.99 677 657 160.8
D 1 52 211503 1310.86 677 657 160.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter